Bar-Ilan Combinatorics Seminar
 
The next meeting of the seminar will take place, IYH,
 
(when)  Sunday, 23 Nisan (Apr. 15), 14:00-15:30  (right after Pesach)
 
(where) Room 201 (Math & CS Seminar Room), Building 216, Bar-Ilan
University
 
(who)    Moshe Cohen (Bar-Ilan University)
 
(what)   The width of the perfect matching graph for knots
 
Abstract:
 
A knot is a circle embedded in three-space, but we immediately
translate it into a bipartite graph Gamma following previous work of
the author. We consider the graph G of perfect matchings of this
graph Gamma, providing a combinatorial formula for the width of G. We
present several properties of Gamma and construct a partition of its
vertices into cycles that relate directly to G.
 
This work was inspired by a seminar talk by Roy Ben-Ari on part of
his Masters thesis under the supervision of Ron Adin and Yuval
Roichman.
 
This is joint work with Mina Teicher.
 
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You are all invited! Graduate students are especially welcome.
Seminar organizer: Ron Adin   <radin@math.biu.ac.il> 
Seminar's homepage:
  <http://www.math.biu.ac.il/~radin/comsem/comsem.html> 
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Technion Math Net-2 (TECHMATH2)
Editor: Michael Cwikel   <techm@math.technion.ac.il> 
Announcement from: Ron Adin   <radin@math.biu.ac.il>